> It is not free to publish journals, or keep tens of thousands of them, with millions of articles, around indefinitely, for instant access by anyone on the web.
it's not free but it's pretty cheap. you can pay a tiny fraction of what the public universities are currently paying for access to these journals to maintain a repository of scientific papers.
look at scihub, is it being funded by Bezos, Bill or Buffet? no. if a single person can host all those papers herself backed by only random donations, I don't think any government or hell, any university would have any trouble doing the same thing with marginal amount of support.
If all you want to do is say "we have pre-pubs on a free FTP server", sure, that's cheap as hell. But it doesn't replace the journals, it doesn't address research funding models, it doesn't move scientific progress forward.